scholarly journals One-Dimensional Fluorene-Based Co(II) Phosphonate Co(H2O)2PO3C–C12H9·H2O: Structure and Magnetism

Inorganics ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 93
Author(s):  
Clarisse Bloyet ◽  
Jean-Michel Rueff ◽  
Olivier Perez ◽  
Alain Pautrat ◽  
Vincent Caignaert ◽  
...  
Keyword(s):  
Magnetic Behavior ◽  
Dimensional Structure ◽  
Single Chain ◽  
Hydrothermal Conditions ◽  
Organic Precursor ◽  
Inorganic Hybrid ◽  
One Dimensional ◽  
Composition And Structure ◽  
Perovskite Type ◽  
Spin Contribution

A new Co(II) phosphonate, Co(H2O)2PO3C–C12H9·H2O, has been synthesized under hydrothermal conditions. The monoclinic P21/c structure of this organic–inorganic hybrid consists of isolated perovskite-type chains of corner-shared CoO4(H2O)2 octahedra interconnected via phosphonate groups. The unique one-dimensional structure of this phase is closely related to the single-chain magnet (SCM) phosphonate Co(H2L)(H2O), with L = 4-Me-C6H4-CH2N(CPO3H2)2, that contains isolated chains of CoO5N octahedra. Like the latter, this hybrid exhibits 1D antiferromagnetic interactions and the possibility of an effective pseudo spin contribution due to spin canting at low temperature, but, in contrast, is not an SCM. This different magnetic behavior is explained by the different geometry of the octahedral chains and by the possible existence of weak antiferromagnetic interactions between the chains. This opens the route to the investigation of a large series of compounds by tuning the chemical composition and structure of the phosphonic acid used as organic precursor of hybrid materials.

scholarly journals Three-dimensional organic–inorganic hybrid sodium halide perovskite: C4H12N2·NaI3 and a hydrogen-bonded supramolecular three-dimensional network in 3C4H12N2·NaI4·3I·H2O

2018 ◽  
Vol 74 (6) ◽  
pp. 728-733 ◽  
Author(s):  
Xiao-Gang Chen ◽  
Ji-Xing Gao ◽  
Xiu-Ni Hua ◽  
Wei-Qiang Liao
Keyword(s):  
Linear Chain ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Stoichiometric Ratio ◽  
X Ray Diffraction ◽  
Inorganic Hybrid ◽  
One Dimensional ◽  
Dimensional Network ◽  
Vertex Sharing ◽  
Perovskite Type

The rational selection of ligands is vitally important in the construction of new organic–inorganic hybrid three-dimensional perovskite complexes. As part of an exploration of perovskite-type materials, two new Na–I compounds based on the piperazine ligand, namely poly[piperazinediium [tri-μ-iodido-sodium]], {(C4H12N2)[NaI3]} n , 1, and catena-poly[tris(piperazinediium) [[triiodidosodium]-μ-iodido] triiodide monohydrate], {(C4H12N2)3[NaI4]I3·H2O} n , 2, have been synthesized by adjusting the stoichiometric ratio of sodium iodide and piperazine, and were characterized by single-crystal X-ray diffraction. In the crystal structures of 1 and 2, each NaI cation is linked to six I atoms, but the compounds show completely different configurations. In 1, the structure includes a perovskite-like array of vertex-sharing NaI6 octahedra stretching along the direction of the three axes, and each piperazinediium dication is enclosed in the NaI3 perovskite cage. However, in 2, each NaI atom bridges a single I atom to form a one-dimensional linear chain, and complex intermolecular hydrogen bonds connect these one-dimensional chains into a three-dimensional supramolecular network.

Adiabatic large polarons in anisotropic molecular crystals

2011 ◽  
Vol 35 (1) ◽  
pp. 15-27
Author(s):  
Zoran Ivić ◽  
Željko Pržulj
Keyword(s):  
Energy Transfer ◽  
Effective Mass ◽  
Molecular Crystals ◽  
Single Chain ◽  
Proper Understanding ◽  
One Dimensional ◽  
Interchain Coupling ◽  
Large Polaron ◽  
The One

Adiabatic large polarons in anisotropic molecular crystals We study the large polaron whose motion is confined to a single chain in a system composed of the collection of parallel molecular chains embedded in threedimensional lattice. It is found that the interchain coupling has a significant impact on the large polaron characteristics. In particular, its radius is quite larger while its effective mass is considerably lighter than that estimated within the one-dimensional models. We believe that our findings should be taken into account for the proper understanding of the possible role of large polarons in the charge and energy transfer in quasi-one-dimensional substances.

An Orthorhombic Modification of KCoPO4 Stabilized under Hydrothermal Conditions: Crystal Chemistry and Magnetic Behavior

2021 ◽  
Author(s):  
Olga V. Yakubovich ◽  
Larisa V. Shvanskaya ◽  
Nadezhda B. Bolotina ◽  
Anna G. Ivanova ◽  
Galina V. Kiriukhina ◽  
...  
Keyword(s):  
Crystal Chemistry ◽  
Magnetic Behavior ◽  
Hydrothermal Conditions ◽  
Orthorhombic Modification

scholarly journals Structural and magnetic study of metallo-organic YIG powder using 2-ethylhexanoate carboxylate-based precursors

2019 ◽  
Vol 33 (09) ◽  
pp. 1950100 ◽  
Author(s):  
S. Hosseinzadeh ◽  
P. Elahi ◽  
M. Behboudnia ◽  
M. H. Sheikhi ◽  
S. M. Mohseni
Keyword(s):  
Saturation Magnetization ◽  
Annealing Temperature ◽  
Sintering Temperature ◽  
Magnetic Behavior ◽  
Yttrium Iron ◽  
Organic Precursor ◽  
Maximum Value ◽  
Diffraction Peaks ◽  
Iron Garnet ◽  
Organic Decomposition

The crystallization and magnetic behavior of yttrium iron garnet (YIG) prepared by metallo-organic decomposition (MOD) method are discussed. The chemistry and physics related to synthesis of iron and yttrium carboxylates based on 2-ethylhexanoic acid (2EHA) are studied, since no literature was found which elucidates synthesis of metallo-organic precursor of YIG in spite of the literatures of doped YIG samples such as Bi-YIG. Typically, the metal carboxylates used in preparation of ceramic oxide materials are 2-ethylhexanoate (2EH) solvents. Herein, the synthesis, thermal behavior and solubility of yttrium and iron 2EH used in synthesis of YIG powder by MOD are reported. The crystallization and magnetic parameters, including saturation magnetization and coercivity of these samples, smoothly change as a function of the annealing temperature. It is observed that high sintering temperature of [Formula: see text] to [Formula: see text] promotes the diffraction peaks of YIG, therefore, we can conclude that the formation of YIG in MOD method increases the crystallization temperature. The maximum value of saturation magnetization and minimum value of coercivity and remanence are observed for the sample sintered at [Formula: see text] which are 13.7 emu/g, 10.38 Oe and 1.5 emu/g, respectively. This study cites the drawbacks in chemical synthesis of metallo-organic-based YIG production.

Porous N-doped graphitic carbon assembled one-dimensional hollow structures as high performance electrocatalysts for ORR

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12467-12471 ◽  
Author(s):  
Qiong Luo ◽  
Liyong Chen ◽  
Binhua Duan ◽  
Zhizhi Gu ◽  
Jing Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Graphitic Carbon ◽  
Special Structure ◽  
Dimensional Structure ◽  
Template Method ◽  
One Dimensional ◽  
Sacrificial Template ◽  
Hollow Structures ◽  
Electrocatalytic Performance ◽  
Hierarchical Porous

Hierarchical porous and hollow N-doped graphitic carbon with one-dimensional structure was successfully achieved by a sacrificial template method, and exhibited an enhanced electrocatalytic performance towards ORR due to its special structure.

Sterically-induced synthesis of 3d–4f one-dimensional compounds: A new route towards 3d–4f single chain magnets

2008 ◽  
Vol 361 (14-15) ◽  
pp. 3997-4003 ◽  
Author(s):  
G. Calvez ◽  
K. Bernot ◽  
O. Guillou ◽  
C. Daiguebonne ◽  
A. Caneschi ◽  
...  
Keyword(s):  
Single Chain ◽  
One Dimensional ◽  
Sterically Induced ◽  
Single Chain Magnets
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